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- [Innovative optics and photonic] Year Started : 2021
Professor
Institute of GIGAKU
Nagaoka University of Technology
Nobuhiro Kawatsuki | Professor Graduate School of Engineering University of Hyogo |
Masayuki Tanaka | President OPT Gate Company, Limited |
In this study, we develop an active phase modulator and a high-efficiency circular polarization beam splitter that can operate at IR and THz regions by combining the liquid crystal photonic structures made of photoalignment liquid crystal polymer and the metamaterials made of metal. Based on the developed geometric phase diffractive elements, we also assemble a polarization probe polarization imaging (PPPI) system for IR and THz polarization image measurement. In addition, by collaborating with several Japanese companies, we demonstrate the application examples of the PPPI system, such as a LiDAR and an environmental measurement, to show the practicality of the PPPI system and make it into a product.
Professor
Graduate School of Engineering
Tohoku University
Nobuaki Kikuchi | Professor Graduate School of Engineering Science Akita University |
Satoshi Tomita | Associate Professor Institute for Excellence in Higher Education Tohoku University |
We will create time varying metamaterials by integrating microelectromechanical systems (MEMS) and ultrahigh frequency magnetic materials. An artificial Raman effect with nonlinear optical processes in the metamaterials gives rise to frequency shifts of input microwaves and millimeter waves, enabling us to realize tunable, portable, high power , and room temperature operated THz light source devices. Our project leads to innovation in nonlinear photonics using time varying metamaterials for Beyond 5G and 6G mobile communication technologies.
Associate Professor
Department of Electrical Engineering and Computer Science
Tokyo Metropolitan University
Fuminori Sakai | President Engineering Department Sakura Tech Corporation |
Ryo Takigawa | Associate Professor Graduate School and Faculty of Information Science and Electrical Engineering Kyushu University |
Atsushi Matsuda | Senior researcher Advanced ICT Research Institute National Institute of Information and Communications Technology. |
Yuya Yamaguchi | Senior researcher Network Research Institute, Photonic ICT Research Center National Institute of Information and Communications Technology |
We demonstrate a novel optical sensor that enables both ultrafast and super-resolution measurements in the time and spatial domain, respectively. Our technology integrates the temporal and spatial measurements, which are in typical investigated individually taking different approaches. In the sensor, the measurement resources can be adaptively assigned to the temporal and spatial region and flexibly applicable to ultrafast and/or super-resolution measurements using the common sensor hardware.
Professor
Graduate School of Engineering
Nagoya University
Hisashi Abe | Chief Senior Researcher Research Institute for Material and Chemical Measurement National Institute of Advanced Industrial Science and Technology |
Hideki Tomita | Professor Graduate School of Engineering Nagoya University |
In this work, we develop a freely controllable optical frequency comb, in which desired ultra-narrow comb modes are selected, amplified, and controlled through nonlinear optical effects. We combine this flexible comb source with state-of-the-art cavity ring-down spectroscopy (CRDS), aiming to realize innovative, highly sensitive, and highly accurate spectroscopic techniques for environmental measurements. Employing these newly developed spectroscopic techniques, we realize highly sensitive measurements of environmental trace species, such as Tritium and trace water vapor.
Professor
Faculty of Medicine
University of Tsukuba
This project aims at establishing a new label-free three-dimensional optical coherence microscope for label-free three-dimensional imaging of living tissue; so-called computationally augmented optical coherence microscope (CA-OCM). In order to establish this new imaging methodology, we first develop four-dimensional Fourier imaging theory and build a new microscope hardware; zero-numerical-aperture (NA) OCM. This new hardware images the sample with an extremely low incident NA. In addition. Several computational methods are going to be developed. These computational methods process the interference signals obtained by the OCM and provide fine tissue structure, and tissue activity information, polarization information. CA-OCM is applied to in vitro, ex vivo and in vivo tumor samples, and its application protocols are established.